Pinhole formation and weight loss during oxidation of industrial graphite and carbon

Autor:	Frank Rusinko, Else Breval, Dinesh K. Agrawal, Maria Klimkiewicz
Rok vydání:	2002
Předmět:	Materials science Scanning electron microscope Mineralogy Vanadium chemistry.chemical_element General Chemistry Pinhole Microstructure Grain size chemistry Chemical engineering Impurity General Materials Science Graphite Carbon
Zdroj:	Carbon. 40:1017-1027
ISSN:	0008-6223
DOI:	10.1016/s0008-6223(01)00231-7
Popis:	The performance of graphite or carbon above 400°C depends to a large degree on its resistance to oxidation. In this work oxidation data of graphite and carbon was analyzed using the number of created pinholes for short-term oxidation and weight loss for long-term oxidation. The effect of grain size, purification, and the amount of inorganic impurities was investigated. The migration of vanadium, the formation and morphology of pinholes, and the weight loss were followed in different samples. Short-term oxidation is diminished by the presence of calcium salts and enhanced by the presence of V2O5, but the latter effect is diminished by the presence of Ca3V2O8. Both calcium salts and V2O5 enhance the long-term oxidation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ce84c3e80cadb269573e8e1ce50dc074 https://doi.org/10.1016/s0008-6223(01)00231-7 Zobrazit plný text záznamu Full Text from ScienceDirect